二苯乙烯苷对创伤性脑损伤模型小鼠的神经保护作用
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篇名: 二苯乙烯苷对创伤性脑损伤模型小鼠的神经保护作用
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摘要: 目的:研究二苯乙烯苷对创伤性脑损伤模型小鼠的神经保护作用。方法:将小鼠随机分为假手术组、模型组和二苯乙烯苷低、中、高剂量组(30、60、120 mg/kg),每组10只。除假手术组外其余各组小鼠采用Feeney氏自由落体法复制创伤性脑损伤模型,损伤1 h后ig各组小鼠相应药物,每日1次,连续14 d。对各组小鼠损伤后3、7、14 d的神经功能缺损进行评分,检测损伤后1 d的脑组织含水量,损伤后3 d的血浆中炎症因子白细胞介素6(IL-6)、IL-10、肿瘤坏死因子α(TNF-α)含量,损伤后7 d的脑内凋亡神经元(NeuN/Caspase-3)阳性细胞量与脑源神经营养因子(BDNF)细胞量。结果:与假手术组比较,模型组小鼠各时间点神经功能缺损评分、脑组织含水量和IL-6、IL-10、TNF-α含量及NeuN/Caspase-3、BDNF阳性细胞量均增加(P<0.01)。与模型组比较,二苯乙烯苷中、高剂量组小鼠损伤后7、14 d的神经功能缺损评分、脑组织含水量和IL-6、TNF-α含量及NeuN/Caspase-3阳性细胞量均减少(P<0.05或P<0.01),IL-10(除二苯乙烯苷中剂量组外)含量、BDNF阳性细胞量均增加(P<0.05或P<0.01),且呈浓度依赖性。结论:二苯乙烯苷对创伤性脑损伤模型小鼠具有一定的神经保护作用,其机制可能与抗炎、增加神经营养因子表达并减少神经元凋亡有关。
ABSTRACT: OBJECTIVE: To study the protective effect of diphenyl ethylene glycoside (TSG) on the nerve of traumatic brain injury (TBI) model mice. METHODS: Mice were randomly divided into sham operation group, model group and TSG low-dose, medium-dose and high-dose groups (30, 60, 120 mg/kg), with 10 mice each. Feeney’s free falling method was used to induce TBI model in those groups except sham operation group, and they were given relevant medicine intragastrically 1 h after modeling once a day for consecutive 14 d. The neurologic impairment was scored 3, 7 and 14 d after modeling, the content of water in cerebral tissue was determined 1 d after modeling; the contents of IL-6, IL-10 and TNF-α in plasma were detected 3 d after modeling; the positive cell volume of BDNF and apoptotic neurons (NeuN/Caspase-3) were detected 7 d after modeling. RESULTS: Compared with sham operation group, neurologic impairment score, the content of water in cerebral tissue, the contents of IL-6, IL-10 and TNF-α, and the positive cell volume of BDNF and NeuN/Caspase-3 were all increased in model group (P<0.01). Compared with model group, neurologic impairment score 7 and 4 d after modeling, the content of water in cerebral tissue, the contents of IL-6, TNF-α content and the positive cell volume of NeuN/Caspase-3 were all decreased in TSG medium-dose and high-dose groups (P<0.05 or P<0.01), while the contents of IL-10 (except TSG medium-dose group) and the positive cell volume of BDNF increased (P<0.05 or P<0.01), in concentration-dependent manner. CONCLUSIONS: TSG has therapeutic effect on TBI model mice, and the mechanism may be associated with anti-inflammatory, the up-regulation of expression of neurotrophic factor and down-regulation of expression of neuron apoptosis.
期刊: 2016年第27卷第13期
作者: 赵兴裕
AUTHORS: ZHAO Xingyu
关键字: 二苯乙烯苷;创伤性脑损伤;抗炎;抗凋亡;神经营养;小鼠
KEYWORDS: Diphenyl ethylene glycoside; Traumatic brain injury; Anti-inflammatory; Anti-apoptosis; Neurotrophy; Mice
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